Num 15:13 Every native Israelite will do these things in this way, in offering a fire offering, with a soothing aroma to Yahveh.
Num 15:14 And if a foreign guest is sojourning with you, or anyone is living permanently among you, and he wishes to offer a fire offering, with a soothing aroma to Yahveh, he will do as you do.
Num 15:15 For the collected assembly, there will be one prescription for you and for the foreign guest who sojourns with you, a permanent prescription throughout your generations. You and the sojourner will be alike in the sight of Yahveh.
Num 15:16 One law and one rule will be for you and for the foreign guest who sojourns with you.”
Num 15:17 Yahveh spoke to Moses, and this is what he said
Num 15:18 “Speak to the people of Israel and say to them, When you come into the land to which I bring you
Num 15:19 and when you eat of the bread of the land, you will present a contribution to Yahveh.
Num 15:20 Of the firstfruits of your dough you will present a loaf as a contribution; like a contribution from the threshing floor, so will you present it.
Num 15:21 Some of the firstfruits of your dough you will give to Yahveh as a contribution throughout your generations.

immutable God

A couple of principles within the Mosaic law are highlighted here. They are not new regulations. They are just being highlighted at this point because the Israelites had just suffered a major setback, and they needed assurance that God was not going to change.

First, within the community, God was accessible to all — even the foreign guests.
Secondly, God’s blessing will continue in spite of failure in the past. Particularly we are being assured that God will make good on his ultimate promises.

FAITHFUL FATHER, thank you for access to you, and for the ultimate blessing we will all share in Christ.